1266 / 1575
SAFARI 400NM
SR
NO
DTC
FTB
DESCRIPTION
CAUSES
EFFECT ON VEHICLE
CHECK
POINTS
CORRECTIVE ACTION
MIL
STATUS
CEL
19.
Check whether IMV is stuck closed, if so replace the IMV.
20.
After rectification ensure the following before handing over to
customer. ~
a) Rail pressure at ignition key on is < 10 bar.
b) By removing the rail pressure sensor connector shows a
very rail pressure value in bar.
c) High pressure leak detection test can be carried out.
d) Please drive the vehicle on road, check and ensure rail
pressure feed-back follows the demand
continuously.(feedback and demand parameters can be
monitored by using diagnostic tool).
81
P0272
92
Performance or Incorrect
Operation
1. This DTC gets logged due to the
mechanical failure of the injector of
cylinder 4 or Cylinder 4 or MDP
(minimum drive pulse) related issue of
Injector of cylinder 4
1.
EMS ECU doesn't activate AC
compressor relay even though
AC request is activated by
customer and applies default ac
torque.
2.
EMS ECU Freeze (Do not
activate) IMV current trim fault.
3.
EMS ECU Increases idle target
speed.
4.
Apply reduce torque 1 mode:(60%
of torque) or reduce torque
mode:(80% of torque).
5.
EMS ECU disable's SPC (Speed
Pilot Control) strategy, no more
SPC trim update.
6.
EMS ECU disables cruise control
function.
7.
EMS ECU disables RVD on
injector Cylinder 4.
8.
EMS ECU Enters into SPC (Speed
Pilot Control) extended mode
(wider area…).
9.
EMS ECU disables IMV resistance
estimation
1.
Check the cylinder for leaks; if noticed Perform necessary
action/repair work to arrest the cylinder leaks.
2.
Ensure Cylinder 4 Injector connector connected to the Injector.
3.
Check the inlet ducts for blockages if any; clean the duct and
check for EGR operation.
4.
Check tappet condition & valve setting; perform the necessary
repairs in case of any problem.
5.
Check whether the injector is functioning properly or not by
performing Injector I/O control test; Replace Injector if faulty.
6.
Check for Injector Related faults - P0204 or P2150 or P2151. If
present then follow the rectification procedure of the
respective DTC's for resolving this issue.
7.
Check whether the C3I values written into EMS ECU for injector
cylinder4 are correct and corresponding to Injector of
cylinder4
8.
Check for any glow plug related faults - P0380-12, P0380-11,
P0380-13, and P0380-14. If present then follow the
rectification procedure of the respective DTC's for resolving
this issue.
9.
Perform Compression test, if test reports a weakness of one of
engine cylinders then make necessary repairs for that
cylinder.
10.
Swap the Injector of cylinder 4 & 2, Swap their C3I values also
and perform driving cycle. Check if P0272 disappears and
P0266 appears because of swapping, then it is confirmed that
there is a problem with Injector Cylinder 4; then replace
Injector of cylinder 4 & Rewrite the C3I values of injectors of
all cylinders.
11.
If problem persists, replace the ECU.
12.
Final check after rectification~
run the engine at idle for some time and check this DTC is not
re-appearing.
ON
OFF